MA72-28_2006, Beaver Brook Charles Basin Cause Unknown Nutrients Siltation Organic enrichment/Low DO Flow alteration Other habitat alterations Pathogens Taste, odor and color Turbidity MA71 -09_2006, Winn Brook Boston Harbor: Mystic Basin Pathogens Arlington AlewifeBrook Belmont MA71011_2006, Clay Pit Pond Boston Harbor: Mystic Basin Pesticides Cambridge1 Lilly Pond Fresh pond Walthanr Cambridge Reservoir Watertown Halcyon Lhke MA72-07_2006, Charles River Charles Basin Priority organics Nutrients Organic enrichment/Low DO Pathogens Noxious aquatic plants Turbidity Exotic species MA72-08_2006, Charles River Charles Basin Cause Unknown Unknown toxicity Priority organics Metals Nutrients Organic enrichment/Low DO Pathogens Oil and grease Taste, odor and color Noxious aquatic plants Turbidity MA72-32_2006, Unnamed tributary Charles Basin Pathogens MA72-30_2006, Unnamed Tributary Charles Basin Cause Unknown N utrients Organic enrichment/Low DO Other habitat alterations Pathogens Taste, odor and color Turbidity iarles RiveY- Newtort MA72017_2006, Chandler Pond Charles Basin Nutrients Organic enrichment/Low DO Noxious aquatic plants Boston Chandler Pond r'Brookline Bulloughs Pond Newton Reservoir MA71005_2006, Blacks Nook Boston Harbor: Mystic Basin Nutrients Noxious aquatic plants MA72-28_2006, Beaver Brook Charles Basin Cause Unknown Nutrients Siltation Organic enrichment/Low DO Flow alteration Other habitat alterations Pathogens Taste, odor and color Turbidity Impaired Waters and TMDL Status Watertown, MA N A Map produced by EPA Region IGIS Center Map Tracker ID 3244, May 30, 2008 Data Sources: TeleAtlas, Census Bureau, USGS, MADEP I Mi les v>EPA United States Environmental Protection Agency New England Impaired Water body Label State ID, Waterbody Name Basin Name Category 4a POC (Pollutants of Concern) Category 5 POC (Pollutants of Concern) Impaired Water Segment EZ2 Category 2 Category 4a Category 3 ^ Category 4c ZZ Category 5 Waterbodies I I MS4 Urbanized Areas (2000 Census) r_-j Municipal Boundaries ------- |